ANNEALING EFFECT ON MICROSTRUCTURE AND CHEMICAL COMPOSITION OF INCONEL 625 ALLOY

Paweł Petrzak, Kazimierz Kowalski, Magdalena Rozmus-Górnikowska, Aleksandra Dębowska, Mateusz Jędrusik, Damian Koclęga

Abstract


Our research focused on Inconel 625 weld overlays on 16Mo3 steel boiler pipes. The investigation focused on the characterization of changes in the microstructure and chemical composition after annealing. The annealing was performed for ten hours at temperatures from 600 to 1000°C. Changes in the microstructure were observed with a scanning and transmission electron microscope (SEM and TEM). The investigation was supplemented by hardness measurements.


Keywords


Inconel 625; microsegregation; annealing

Full Text:

PDF

References


DuPont J.N., Lippold J.C., Kiser S.D.: Welding metallurgy and weldability of nickel-base alloys. John Villey& Sons, New Jersey 2009

DuPont J.N.: Solidification of an Alloy 625 Weld Overlay. Metallurgical and Materials Transactions A, 27, 11 (1996), 3612–3620

Banovic S.W., DuPont J.N., Marder A.R.: Dilution and microsegregation in dissimilar metal weld between upper austenitic stainless and nickel base alloys. Science and Technology of Welding and Joining, 7, 6 (2002), 374–383

Adamiec J.: High temperature corrosion of power boiler components cladded with nickel alloys. Materials Characterization, 60 (2009), 1093–1099

Rozmus-Górnikowska M., Blicharski M., Kusiński J., Kusiński L., Marszycki M.: Influence of boiler pipe cladding techniques on their microstructure and properties. Archives of Metallurgy and Materials, 58 (2013), 1093–1096

Guo Qingmiao, Li Defu, Peng Haijian, Guo Shengli, Hu Jie, Du Peng: Nucleation mechanisms of dynamic recrystallization in Inconel 625 superalloy deformed with different strain rates. Rare Metals, 31, 3 (2012), 215–220

Cortial F., Corrieu J.M., Vernot-Loier C.: Influence of heat treatment on microstructure, mechanical properties and corrosion resistance of weld alloy 625. Metallurgical and Materials Transactions A, 26, 5 (1995), 1273–1286

Mathew M.D., Parameswaran P., Bhanu Sankara Rao K.: Microstructural changes in alloy 625 during high temperature creep. Materials Characterization, 59 (2008), 508–513

Tawancy H.M., Allam N.M.: Effect of Ni3Nb precipitation on the corrosion resistance of Inconel alloy 625. Journal of Materials Science Letters, 9, 3 (1990), 343–347

Shankar V., Bhanu Sankara Rao K., Mannan S.L.: Microstructure and mechanical properties of Inconel 625 superalloy. Journal of Nuclear Materials, 288 (2001), 222–232

Cieslak M.J.: The metallurgy of alloy 625. Superalloys 718, 625 and Various Derivatives. The Minerals, Metals and Materials Society, Pennsylvania 1991




DOI: https://doi.org/10.7494/mafe.2018.44.2.73

Refbacks

  • There are currently no refbacks.